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Environmentally-responsible corporate: Actions analysis of Latin American pulp and paper industry

Environmental Challenges 2021年 4卷

作者： Moraes, Douglas M. Silva, Paulo H. Rampasso, Izabela Simon Anholon, Rosley Quelhas, Osvaldo L.G. Farias Filho, José R. Toledo, Roberto F. School of Mechanical Engineering University of Campinas Mendeleyev Street 200 Campinas Brazil PNPD/CAPES Program Doctoral Program in Sustainable Management Systems Federal Fluminense University Passo da Pátria Street 156 Niterói Brazil Master Program in Management Systems and Doctoral Program in Sustainable Management Systems Federal Fluminense University Passo da Pátria Street 156 Niterói Brazil Department of Engineering Federal Fluminense University Passo da Pátria Street 156 Niterói Brazil

This article aims to list environmental practices used by Latin American companies in the pulp and paper industry, to create a list, through a scientific method, that can direct other researchers and managers interested in the subject. The research strategies used were bibliographic research and content analysis. The content analysis used 36 sustainability reports published by Latin American companies in the industry between 2018 and 2019. Although 264 companies were mapped, only 36 of them presented sustainability report possible to be accessed. Through the sample of 36 sustainability reports, 36 sustainable environmental practices were identified that could be grouped into five groups, namely: (1) Reuse of waste, efficiency in the production process and effluents treatment;(2) Preservation and area recovery;(3) Energy efficiency;(4) Initiatives with stakeholders;(5) Control of gas emission. Despite the exploratory nature, the information presented here can be used by managers in the area and researchers interested in improving environmental practices of the pulp and paper industry. © 2021 The Author(s)

关键词： Environmental practices Latin America Pulp and paper industry

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Bioeconomic potential of lignocellulosic by-products: Steam explosion-based fractionation into solid and liquid phases for fiber and methane production

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Bioresource Technology 2025年 433卷 132723页

作者： Orth, Fabian Hülsemann, Benedikt Kriswantoro, Jayen Aris Ko, Ting-Wu Chu, Chen-Yeon State Institute of Agricultural Engineering and Bioenergy University of Hohenheim Garbenstraße 9 Stuttgart70599 Germany Ph.D. Program of Mechanical and Aeronautical Engineering Feng Chia University Wenhua 100 Taichung407 Taiwan Institute of Green Products Feng Chia University Wenhua 100 Taichung407 Taiwan Master's Program of Green Energy Science and Technology Feng Chia University Wenhua 100 Taichung407 Taiwan School of Life Sciences and Technology Institut Teknologi Bandung Ganesa 10 Bandung40132 Indonesia

This study examines lignocellulosic by-products from agriculture and food industry for methane production. Banana peels, cacao bean shells, rice straw, tomato plant residues, and wheat straw underwent steam explosion treatment (SE) at 160 °C and 10 min followed by solid–liquid separation. Specific methane yield increased between 8.6 % to 19.6 % for rice and wheat straw and cacao bean shells after SE treatment, while decreasing for banana peels (14.1 %). The liquid phase demonstrated high specific methane yield potential, with SMY between 227 and 336 LCH4 kgODM−1. Meanwhile, the fiber-rich solid phase offers potential for both energy applications and material utilization. The process supports both bioeconomic strategies and greenhouse gas reduction efforts through sustainable valorization of agricultural waste streams in circular economy models. However, further research is needed to optimize SE conditions and investigate other applications for the solid such as peat substitution. © 2025 The Author(s)

关键词： Feedstocks

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Numerical Study of Temperature Profiles of Transient Flow in the Geothermal Oilfield

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IOP Conference Series: Earth and Environmental Science 2021年第1期732卷

作者： J Hendrarsakti M Rahma Faculty of Mechanical and Aerospace Engineering Geothermal Engineering Master's Program Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia

Some petroleum wells that are no longer productive still have heat in their formation rocks. Those heat can be extracted and utilized by injecting working fluid into the wellbore. The current study's objective was to create a 2D numerical calculation program for transient flow temperatures inside the well then it was used to calculate the temperature distribution in oil and gas fields in the Arun field and BK Area. The injected fluids were modeled as a double-pipe heat exchanger. Heat transfer processes inside the wellbore were convection in the inner pipe and the annulus and conduction in the pipe walls and rock formations. The computational calculation used a finite difference method. The computation results were then compared with calculations from the literature. After being validated, the program was used to calculate the Arun field and BK Area temperature distributions. This study found that compared with the reference literature, the current results had a similar optimum temperature range of 130°C-160°C but had different profiles shape with an average deviation of 12%. In the Arun fields, simulation results indicated that the field could reach temperatures between 90°C-120°C and was classified as a medium-temperature geothermal source. BK Area could reach optimum temperatures between 50°C-80°C and be classified as the low-temperature geothermal.

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Famileaf: Flowerpot robot for dementia prevention

Famileaf: Flowerpot robot for dementia prevention

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IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)

作者： Nagisa Ishizumi Manabu Gouko Graduate School of Engineering Master's program in Mechanical Engineering Tohoku Gakuin University Miyagi Prefecture Japan

In Japan, as the rate of dementia increases, the interest in preventing dementia also increases. In this paper, we propose a flowerpot-type robot system called Famileaf. Growing a plant using Famileaf is expected to prevent dementia. The robot comprises a flowerpot, microcomputer, multiple sensors, and a battery. Famileaf can post a comment on a social networking site (SNS) to interact with an elderly person who is a grower. The users of the robot can grow plants in the same manner as they take care of a pet. Because the users can grow plants with more attachment, the use of Famileaf is expected to prevent dementia. Herein, the concept and the prototype of Famileaf have been described.

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Reducing non-productive time of mud pump with acoustic emission monitoring techniques on fluid end parts

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IOP Conference Series: Materials Science and engineering 2021年第1期1034卷

作者： Hilman Hilmawan Hasan Basri Mechanical Engineering Master Study Program Sriwijaya University Jalan Srijaya Negara Bukit Besar Palembang Sumatera Selatan 30139 Indonesia

This research conducted for overcoming the high non-productive time (NPT) damage of fluid end part mud pump in the drilling of PT. Pertamina PDSI Drilling Rig # 42.2/N1500-E Well SWI-001 at Pali, South Sumatra, Indonesia. The purpose of this study is to provide a solution for detecting early worn out of fluid end part with the innovation of the electric audio module (EAM), which is suitable for conditions in the field. This EAM works using the method of detecting acoustic emission signals from piezoelectric sensors that arise due to the movement of the drilling fluid and fluid end part in the mud pump module body. Then the emitted pulse is forwarded to the EAM, and the results give through two outputs, namely the spectrogram graphic and the acoustic emission sound that enlarged through headphones. The results of this EAM innovation can reduce the NPT in PDSI Rig # 42.3/N1500-E from 34.5 hours to 0 hours, and monitoring can be done remotely up to more than 50 meters no longer on the spot. The application of EAM in drilling rig implies a modification in the maintenance of a mud pump from breakdown to predictive maintenance. It supports the safety aspect considering monitoring which can perform remotely.

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Modeling crystallographic anisotropy in interfacial sliding phenomenon in nanoindentation of nanoscale Cu/Nb accumulated rolling bonding (ARB) multilayered materials

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AIP Conference Proceedings 2023年第1期2594卷

作者： A. S. Budiman R. Sahay F. E. Gunawan C. Harito H. Gunawan I. Radchenko E. Navarro S. Escoubas T. Cornelius O. Thomas N. Raghavan Industrial Engineering Department BINUS Graduate Program – Master of Industrial Engineering Bina Nusantara University Jakarta Indonesia Xtreme Materials Lab Engineering Product Development Singapore University of Technology and Design (SUTD) Singapore Industrial Engineering Department Faculty of Engineering Bina Nusantara University Jakarta Indonesia 11480 Center for Advancing Materials Performance from the Nanoscale (CAMP-nano) State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University (XJTU) Xi'an China Aix-Marseille Université CNRS IM2NP UMR 7334 Marseille France

Nanoindentation is widely used to investigate mechanical properties of materials at small scales. In this work, owing to the presence of contrasting interfaces along rolling (RD) and transverse direction (TD), a 16 nm accumulative roll bonding (ARB) Cu/Nb nanolaminate as a test material due to its crystallographic anisotropy was used. Nanoindentation was performed and then Scanning Probe Microscopy (SPM) data was conducted to measure the pile-up height along RD and TD in the nanoscale Cu/Nb multilayered materials. It was found that the 16 nm Cu/Nb ARB nanolayered material along RD showed higher surface pile-up than TD attributed the observation to the variation in the Cu/Nb interface plasticity along RD and TD. Further, a comparation and validation of experimental indentation data by performing 2D axisymmetric Finite Element Analysis (FEA) indicated that the simulation compares well with the experimentally generated load-displacement curves, while qualitative agreement was obtained with the pileup data. It is believed that the characterization of surface pile-up is very important for enabling the nanoscale Cu/Nb ARB nanolaminates as the novel stretchable/flexible metallic conductor materials (with emerging applications such as e-skins, human-computer interaction, and soft robotics) that may prove crucial for the global green and sustainability efforts (soft robots for collecting plastic trashes in ocean).

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Design and energy assessment of a new hybrid solar drying dome - Enabling Low-Cost, Independent and Smart Solar Dryer for Indonesia Agriculture 4.0

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IOP Conference Series: Earth and Environmental Science 2022年第1期998卷

作者： F E Gunawan A S Budiman B Pardamean E Djuana S Romeli N Hananda C Harito D P B Aji D N N Putri Stevanus Industrial Engineering Department BINUS Graduate Program - Master of Industrial Engineering Bina Nusantara University Jakarta Indonesia 11480 Bioinformatics and Data Science Research Center Bina Nusantara University Jakarta 11480 Indonesia Computer Science Department BINUS Graduate Program - Master of Computer Science Bina Nusantara University Jakarta Indonesia 11480 Electrical Engineering Department Faculty of Industrial Technology Universitas Trisakti Jakarta 11440 Indonesia PT. Impack Pratama Industri Jakarta Indonesia Industrial Engineering Department Faculty of Engineering Bina Nusantara University Jakarta 11480 Indonesia. Mechanical Engineering Department. Faculty of Industrial Technology Universitas Trisakti Jakarta 11440 Indonesia

Solar dryer is typically used for agricultural purposes in Indonesia. There are many economically important crops requiring storage or drying under particular environmental conditions such as temperature and humidity. High temperatures inside solar dryer prevents the growth of microorganism, and quickly reduce moisture content from the substance. A hybrid solar dryer is generally considered to provide the most optimum solution, however solar panels may be expensive and they still only provide heat or energy in the daytime. Hence, we propose here a new kind of hybrid solar dryer for 24/7 optimum conditions for crops - enabled by recent advances in energy technologies as well as Industry 4.0. This study aims to create an efficient, affordable and a self-sufficient intelligent energy system that will be applied to agriculture for storage or drying purposes by measuring the energy needs for the optimal drying system. Therefore, it is crucial to estimate and assess the critical energy needs for such new systems in order to optimize and design such smart solar dryer (SSD) system especially for Indonesia's agricultural needs. We use design experience of our industry partner (PT Impack Pratama Industri, Indonesia) who has been working extensively on such solar dryer dome (SDD) based on polycarbonate material (only solar irradiation, no other technologies) and theoretical framework based on first principles in thermodynamics to estimate and assess critical energy needs for such dome with all the smart technologies. The calculation was performed based on Mollier diagram and the result still a rough estimation of energy required.

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Lateral force analysis of an acoustic levitated plate using boundary element method 25

Lateral force analysis of an acoustic levitated plate using ...

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25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018

作者： Matsumoto, Kosuke Masuda, Arata Kyoto Institute of Technology Master Program of Mechanical and System Engineering Kyoto Japan Kyoto Institute of Technology Mechanical Engineering Kyoto Japan

ISBN: (纸本)9781510868458

In this study, the lateral force acting on an acoustically levitated plate in a near-field acoustic levitation setup is numerically analyzed to understand the in-plane behavior of the levitated plate. A vibrating surface in a ultrasound frequency can levitate a planer object by the effect of the acoustic pressure radiated from the surface. This is called near-field acoustic levitation. At the same time, the sound pressure distribution in the air gap between the radiation surface and the levitated plate generates an acoustic streaming which yield the acoustic viscous stress on the surface of the levitated plate. The resulting force and torque acting on the levitated plate governs the stability and the in-plane motion of the plate. In this paper, the force acting on the levitated plate is calculated by integrating the acoustic viscous stress which is derived through the Nyborg's formulation of the acoustic streaming and the sound field analysis using the boundary element method (BEM), which can properly take account of the effect of the infinite medium. The validity of the calculation is verified by comparing the calculated force with experimental results reported in the *** dependence of the force on the lateral position of the levitated plate is then discussed in terms of the in-plane stability. © 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. All rights reserved.

关键词： Boundary element method

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A Study of the Sensitivity of the Fuel Consumption to Driving Strategy by Micro Simulation

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Procedia Computer Science 2019年 157卷 375-381页

作者： Fergyanto E. Gunawan Benfano Soewito Nico Surantha Tuga Mauritsius Nobumasa Sekishita Industrial Engineering Department BINUS Graduate Program - Master of Industrial Engineering Bina Nusantara University Jakarta Indonesia 11480 Computer Science Department BINUS Graduate Program - Master of Computer Science Bina Nusantara University Jakarta Indonesia 11480 Information Systems Information Department BINUS Graduate Program - Master of Information Systems Management Bina Nusantara University Jakarta Indonesia 11480 Department of Mechanical Engineering Toyohashi University of Technology Toyohashi Aichi 441-8580 Japan

Global warming due to excessive emission greenhouse gases is a significant issue faced by humanity, and collectively, cars and trucks contribute about 20% to the entire global-warming gases. For a reason, recently, many attempts have been endured to reduce the emission and to increase fuel efficiency, including vehicle platooning, better driving strategy, and increasing engine efficiency. This study intends to provide a more detail assessment regarding the effects of the driving strategy to fuel consumption. For the purpose, the vehicle dynamics are quantified by employing the car-following model based on the optimal velocity model. The fuel consumption is estimated from the regression model of Ahn 18 . The result suggests that the braking distance strongly affects fuel consumption.

关键词： Optimal Velocity Model Micro Simulation Car-Following Model Fuel Efficiency

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Classification of the Structural Integrity by the General Vibration Method

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Procedia Computer Science 2019年 157卷 382-387页

Traditionally, for the purpose of classifying the integrity of an engineering structure, one may use the information of the natural frequencies or mode shapes or some other measures derived from the two. In this research, we propose a classification method on the basis of the general vibration model. The general vibration model is essentially a set of differential equations describing the dynamics of the structure under consideration. For the purpose of damage detection, a deviation of the general vibration model from the dynamic equilibrium point marks the occurrence of the damage. To demonstrate the effectiveness of the method, we study two simplest dynamical systems consisting of one- and two-concentrated masses subjected to a prescribed dynamic load. The structural damages are introduced artificially by reducing the stiffness of spring in the structures. We find that the general vibration model is more sensitive to damages than the traditional methods.

关键词： General Vibration Model Structural Integrity Structural Health Monitoring Power Spectral Density Damage Index

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